Three-way reversing valve device

Abstract

The utility model relates to the technical field of valves, and particularly discloses a three-way reversing valve device which comprises a central pipe. A plurality of three-way pipes are fixedly connected to the central pipe in a communicating manner; a plug column is inserted into the center pipe in a sealed and rotating mode. A right-angle through hole communicated with the two three-way pipes is formed in the plunger; the plunger is sleeved with a fixing cover in a sealed mode. A square shaft is fixedly connected to the plunger; the square shaft is sleeved with a steering sleeve plate; an adjusting limiting groove corresponding to the steering sleeve plate is formed in the fixed cover; the steering sleeve plate is held to rotate in the adjusting limiting groove, so that the angle of the square shaft, the angle of the plunger and the angle of the right-angle through hole are changed, the movement path of the right-angle through hole is divided into three sections, the right-angle through hole and the three-way pipe are connected and disconnected in three states, namely the state of communication in two directions and the state of blocking, and the right-angle through hole and the three-way pipe are connected through the cylindrical plunger. And in addition, the resistance is small in the state switching process, and the on-off state can be conveniently, rapidly and accurately changed.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a three-way reversing valve device. Background Technology

[0002] A directional control valve is a valve with two or more flow patterns and two or more ports; it is a valve that realizes the communication, cut-off and reversal of hydraulic oil flow, as well as pressure unloading and sequential action control; according to the number of oil passages connected to the valve body, it is divided into two-way, three-way, four-way and six-way, etc.

[0003] Chinese utility model patent CN204127387U, published on January 28, 2015, discloses a three-way reversing valve, including a valve body and connectors symmetrically arranged on both sides of the valve body for connecting pipes. The valve body includes a straight channel with inlets at both ends and an outlet channel communicating with the straight channel. The connectors have a connecting channel communicating with the straight channel. The inner diameter of the straight channel is larger than the inner diameter of the connecting channel. A switching resistor is slidably disposed within the straight channel in its axial direction. The outer diameter of the switching resistor is larger than the inner diameter of the connector, and its outer circumferential surface is fitted against the inner wall of the valve body. The switching resistor is provided with an anti-tipping component to prevent it from tilting axially within the valve body. The purpose of this utility model is to provide a three-way reversing valve that can not only switch between two flow paths but also achieve a self-sealing function and has a long service life.

[0004] However, the above-mentioned publicly disclosed solutions have the following shortcomings: the existing three-way reversing valve achieves the switching of flow direction by the long-distance displacement of the switching resistance element, resulting in low switching efficiency, and is prone to leakage under high pressure environment, and the displacement speed is reduced. Utility Model Content

[0005] The purpose of this invention is to solve the technical problems of existing three-way directional valves, which achieve flow direction switching through the long-distance displacement of the switching element, resulting in low switching efficiency, easy leakage under high pressure, and reduced displacement speed. The invention provides a three-way directional valve device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution;

[0007] The present invention discloses a three-way reversing valve device, comprising a central tube; multiple three-way pipes are connected and fixedly connected to the central tube; a plug is rotatably inserted and sealed inside the central tube; a right-angle through hole is formed on the plug connecting two three-way pipes; a fixing cover is sealed and sleeved on the plug; a square shaft is fixedly connected to the plug; a steering sleeve is sleeved on the square shaft; and an adjustment limiting groove is formed on the fixing cover corresponding to the steering sleeve.

[0008] Furthermore, a limiting block is detachably fixed to the upper end of the square shaft.

[0009] Furthermore, a motor is detachably fixed to the limiting block; a sealing plate is fixed to the motor; and the sealing plate is detachably fixed to the fixing cover.

[0010] The three-way reversing valve device provided by this utility model has the following beneficial effects:

[0011] 1. This utility model involves rotating the steering sleeve within the adjusting limit groove, thereby changing the angles of the square shaft, the plug, and the right-angle through hole. This divides the movement path of the right-angle through hole into three segments, resulting in three states for the right-angle through hole and the three-way pipe: connected to two directions and blocked. Furthermore, the cylindrical plug allows it to withstand higher fluid pressures, and the resistance is low when switching states, making it convenient, quick, and accurate to change the on / off state.

[0012] 2. This utility model allows the steering plate to be rotated by holding the handle, so that the steering plate can be positioned in the adjustment limit groove, thereby controlling the angle of the right-angle through hole on the plunger. This allows switching between alignment and misalignment between the three-way pipes, thus changing the flow direction and whether the three-way reversing valve is on or off as needed. In addition, the cylindrical plunger makes the rotation resistance low, which can be used in high-pressure fluid environments. Attached Figure Description

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the third isometric structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the fourth isometric structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the fifth isometric structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the sixth isometric structure of this utility model;

[0020] Figure 7 This is a schematic diagram of the seventh axonometric structure of this utility model.

[0021] The following are the labels in the diagram: 1. Center tube; 2. T-joint; 3. Plug; 4. Right-angle through hole; 5. Sealing ring; 6. Square shaft; 7. Steering sleeve; 8. Limit block; 9. Handle; 10. Adjustment limit groove; 11. Fixing cover; 12. Sealing plate; 13. Motor. Detailed Implementation

[0022] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0025] Please see Figure 1-7 As shown, a three-way reversing valve device includes a central tube 1; multiple three-way tubes 2 are connected and fixed to the central tube 1; a plug 3 is rotatably inserted and sealed inside the central tube 1; a right-angle through hole 4 is opened on the plug 3, connecting two three-way tubes 2; a fixed cover 11 is sealed and sleeved on the plug 3; a square shaft 6 is fixed to the plug 3; a steering sleeve 7 is sleeved on the square shaft 6; an adjustment limiting groove 10 is opened on the fixed cover 11 corresponding to the steering sleeve 7. By holding the steering sleeve 7 and rotating it within the adjustment limiting groove 10, the angles of the square shaft 6, the plug 3, and the right-angle through hole 4 are changed, so that the movement path of the right-angle through hole 4 is divided into three segments, resulting in three states of connection and disconnection between the right-angle through hole 4 and the three-way tubes 2: connection to two directions and a blocked state. Furthermore, the cylindrical plug 3 can withstand greater fluid pressure and has low resistance when switching states, making it convenient, quick, and accurate to change the on / off state.

[0026] The upper end of the square shaft 6 is detachably fixed with a limiting block 8. The limiting block 8 prevents the steering sleeve 7 from coming off the upper end of the square shaft 6, so that it can rotate stably.

[0027] A motor 13 is detachably fixed to the limiting block 8; a sealing plate 12 is fixed to the motor 13; the sealing plate 12 is detachably fixed to the fixed cover 11. The motor 13 drives the rotation of the limiting block 8, the square shaft 6 and the piston 3, making it faster and more precise, thereby achieving fast, efficient and precise action.

[0028] The direction of one of the through holes of the steering sleeve 7 and the right-angle through hole 4 is aligned, so that the direction of fluid flow can be intuitively observed according to the direction of the steering sleeve 7.

[0029] A handle 9 is fixedly connected to the opening on the steering sleeve 7. By holding the handle 9, the steering sleeve 7 is rotated, so that the steering sleeve 7 can be positioned within the adjustment limit groove 10, thereby controlling the angle of the right-angle through hole 4 on the plunger 3. This allows switching between alignment and misalignment between the three-way pipes, so that the flow direction and whether the three-way reversing valve is on or off can be changed as needed. In addition, the cylindrical plunger 3 makes the rotation resistance low, which can be used in high-pressure fluid environments.

[0030] A sealing ring 5 is filled in the groove between the plunger 3 and the fixed cover 11; another sealing ring 5 is filled in the groove between the plunger 3 and the central tube 1. The gap between the upper and lower ends of the plunger 3 is sealed by the two sealing rings 5, making it more airtight and able to withstand greater fluid pressure.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A three-way reversing valve apparatus characterized by; The utility model provides a center tube (1), a plurality of three -way pipes (2) are communicated and are fixed on the center tube (1), a plug post (3) is sealed and is inserted in the center tube (1), two three -way pipes (2) are communicated and are set up right angle through -hole (4) on the plug post (3), a fixed cover (11) is sealed and is sleeved on the plug post (3), a square shaft (6) is fixed on the plug post (3), a steering sleeve plate (7) is sleeved on the square shaft (6), an adjusting limit slot (10) is set up on the fixed cover (11) corresponding steering sleeve plate (7).

2. The three-way diverter valve device of claim 1, wherein: The upper end of the square shaft (6) is detachably fixed with a limiting block (8).

3. The three-way diverter valve device of claim 2, wherein: A motor (13) is detachably fixed on the limiting block (8), a closing plate (12) is fixed on the motor (13), and the closing plate (12) is detachably fixed on the fixed cover (11).

4. The three-way diverter valve device of claim 1, wherein: The steering sleeve plate (7) is aligned with one of the through holes of the right angle through hole (4) in direction.

5. The three-way diverter valve device of claim 1, wherein: A handle (9) is fixed on the steering sleeve plate (7) through a hole.

6. The three-way diverter valve device of claim 1, wherein: A sealing ring (5) is filled in the groove between the plug post (3) and the fixed cover (11), and another sealing ring (5) is filled in the groove between the plug post (3) and the center tube (1).

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